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Tue, 18 Nov 2025 09:10:22 -0800 (PST) Received: from fedora ([103.120.31.122]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7b9250d332asm17165019b3a.25.2025.11.18.09.10.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Nov 2025 09:10:22 -0800 (PST) From: Ankit Khushwaha To: Thomas Gleixner , Ingo Molnar , Peter Zijlstra , Darren Hart , Davidlohr Bueso , andrealmeid@igalia.com, Shuah Khan Cc: linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Ankit Khushwaha Subject: [PATCH v2] selftests/futex: Fix storing address of local variable Date: Tue, 18 Nov 2025 22:38:50 +0530 Message-ID: <20251118170907.108832-1-ankitkhushwaha.linux@gmail.com> X-Mailer: git-send-email 2.51.1 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=8 Content-Transfer-Encoding: 8bit In "child_circular_list()" address of local variable ‘lock_struct a’ is assigned to "" raising the following warning. robust_list.c: In function ‘child_circular_list’: robust_list.c:522:24: warning: storing the address of local variable ‘a’ in ‘head.list.next’ [-Wdangling-pointer=] 522 | head.list.next = &a.list; | ~~~~~~~~~~~~~~~^~~~~~~~~ robust_list.c:513:28: note: ‘a’ declared here 513 | struct lock_struct a, b, c; | ^ robust_list.c:512:40: note: ‘head’ declared here 512 | static struct robust_list_head head; | ^~~~ removing the static keyword of "head" to fix this. Signed-off-by: Ankit Khushwaha --- changelog: v2: Added changes suggested by André. v1: https://lore.kernel.org/all/20251118162619.50586-1-ankitkhushwaha.linux@gmail.com/ --- tools/testing/selftests/futex/functional/robust_list.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/futex/functional/robust_list.c b/tools/testing/selftests/futex/functional/robust_list.c index e7d1254e18ca..ef21a7ec9def 100644 --- a/tools/testing/selftests/futex/functional/robust_list.c +++ b/tools/testing/selftests/futex/functional/robust_list.c @@ -509,7 +509,7 @@ TEST(test_robust_list_multiple_elements) static int child_circular_list(void *arg) { - static struct robust_list_head head; + struct robust_list_head head; struct lock_struct a, b, c; int ret; -- 2.51.1